Hot-air register



(No Model.) 2 Sheets-Sheet 1.

P. BURMEISTBR.

HOT AIR REGISTER.

No. 435,391. Patented Sept. 2, 1890.

' In/ rywio r (No Model.) 2 Sheets-Sheet 2. P. BURMEISTER.

. HOT AIR REGISTER. No. 435,391. 4 Patented Sept. 2, 1890.

UNITED STATES PATENT OFFICE,

FREDERICK BURMEISTER, OF CLEVELAND, OHIO, ASSIGNOR TO F. E. DRURY, OF SAME PLACE, AND H. P. OROWVELL, OF CHICAGO, ILLINOIS.

HOT-AIR REGISTER.

SPECIFICATION forming part of Letters Patent No. 435,391, dated. September 2, 1890.

serial No. 353,593. (No model.)

To all whom it may concern.-

Be it known that I, FREDERICK BURMEIS- TER, of Cleveland, in the county of Guyahoga and State of Ohio, have invented certain new and useful Improvements in Hot- Air Registers; and I do hereby declare the following; to be a full, clear, and exact description of the invention, such as will enable others skilled in the art to which it pertains to make and use the same.

My invention relates to improvements in hot-air registers; and it consists in certain features of construction and in combination of parts hereinafter described, and pointed B B are thin detachable metal end plates located in the main on the inside of the frame. The lower edges of members B have outwardly-projecting flanges B, that extend under the lower edge of the frame, the latter being cut away to receive these'fianges, so that the frame and members B are flush along the bottom and outer faces of the frame. The end sections of the frame, near the corners thereof on the external faces thereof are depressed at a for receiving the upturned ears I) of members 13. Hence the latter by embracing the frame at these points are held in place laterally by a single screw a, which is sufficient to secure each plate 13 in position. Plates B are provided each with a series of holes b near the lower edge thereof and on their inner faces for receiving, respectively, trunnions c of slats or shutters O. Members B at the top have inwardly-proj ecting ears 13 these cars being pierced vertically and the holes screw-threaded for receiving screws b that secure the grating or fret-work. (Not shown.) The shutters at the one end thereof and to the one side of their axes are provided with pins or lugs 0', extending lengthwise the shutters, on which is mounted the shifting-bar D, this bar having a series of lateral holes adapted to receive with an easy fit lugs or pins 0.

E is a segmental lever fulcrumed on trunnion c of the central shutter. This lever has a radial slot E, in which operates a laterallyprojecting pin d of the shifting-bar. The segmental face of lever E is serrated at 6, so that it may be operated with the foot, and this face is supposed to extend flush with or slightly above the grating; also, is usually provided a removable pin 6' for operating with the foot or with the fingers, this being usually omitted, except where the register is so near the side of the room that the pin is out of the way, so that it will not be trod upon. By oscillating lever Ethe shutters are opened or closed. It will be observed that little or no fittingis required, except the drilling of such holes as cannot well be cored and the screw-threading of such holes as require it, and that such drilling and screw-thread ing are incident to manufacturing about every variety of hot-air registers.

WVhat I claim is- I In hot-air registers, the combination, with a supporting-frame, substantially as indicated,

FREDERICK BURMEISTER.

WVitnesses:

CHAS. H. Donna, WARD Hoovna. 

